The test:
wget -qO- wget.racing/nench.sh | bash; wget -qO- wget.racing/nench.sh | bash
The configuration:
arch: amd64
cores: 1
cpulimit: 1
hostname: HOST_NAME
memory: 1024
net0: name=eth0,bridge=vmbr1,firewall=1,gw=XXXXXXX,hwaddr=AXXXXXX,ip=XXXXX,type=veth
net1...